Chris Nauroth created HADOOP-13321:
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Summary: Deprecate FileSystem APIs that promote inefficient call
patterns.
Key: HADOOP-13321
URL: https://issues.apache.org/jira/browse/HADOOP-13321
Project: Hadoop Common
Issue Type: Improvement
Components: fs
Reporter: Chris Nauroth
{{FileSystem}} contains several methods that act as convenience wrappers over
calling {{getFileStatus}} and retrieving a single property of the returned
{{FileStatus}}. These methods have a habit of fostering inefficient call
patterns in applications, resulting in multiple redundant {{getFileStatus}}
calls. For HDFS, this translates into wasteful NameNode RPC traffic. For file
systems backed by cloud object stores, this translates into wasteful HTTP
traffic. This issue proposes to deprecate these methods and instead encourage
applications to call {{getFileStatus}} and then reuse the same {{FileStatus}}
instance as needed.
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